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高等学校化学研究 ›› 2013, Vol. 29 ›› Issue (2): 319-323.doi: 10.1007/s40242-013-2230-8

• Articles • 上一篇    下一篇

Synthesis of p-Hydroxybenzaldehyde by Liquid-phase Catalytic Oxidation of p-Cresol over PVDF Modified Cobalt Pyrophosphate

ZHANG Yi-bo1,2, WANG De-qiang1, MIAO Zhen-zhen1, PAN Xi-qiang1, ZHANG Zhen-dong1, YANG Xiang-guang1   

  1. 1. Laboratory of Green Chemistry and Process, Changchun Institute of Applied Chemistry, Changchun 130022, P. R. China;
    2. University of Chinese Academy of Sciences, Beijing 100049, P. R. China
  • 收稿日期:2012-06-13 修回日期:2012-08-29 出版日期:2013-04-01 发布日期:2013-03-20
  • 通讯作者: YANG Xiang-guang E-mail:xgyang@ciac.jl.cn
  • 基金资助:

    Supported by the National Natural Science Foundation of China(No.21177120) and the National High Technology Research and Development Program of China(No.2011AA03A406).

Synthesis of p-Hydroxybenzaldehyde by Liquid-phase Catalytic Oxidation of p-Cresol over PVDF Modified Cobalt Pyrophosphate

ZHANG Yi-bo1,2, WANG De-qiang1, MIAO Zhen-zhen1, PAN Xi-qiang1, ZHANG Zhen-dong1, YANG Xiang-guang1   

  1. 1. Laboratory of Green Chemistry and Process, Changchun Institute of Applied Chemistry, Changchun 130022, P. R. China;
    2. University of Chinese Academy of Sciences, Beijing 100049, P. R. China
  • Received:2012-06-13 Revised:2012-08-29 Online:2013-04-01 Published:2013-03-20
  • Supported by:

    Supported by the National Natural Science Foundation of China(No.21177120) and the National High Technology Research and Development Program of China(No.2011AA03A406).

摘要:

The influence of the wettability of a catalyst on the performance of the liquid phase oxidation of p-cresol was investigated. It was found that the surface hydrophobicity of a catalyst, which can be changed by modification with various loadings of polyvinylidene fluoride(PVDF), has a promotion effect on the catalytic performance. At the same time, the reaction parameters such as oxygen pressure, molar ratio of NaOH to p-cresol, reaction temperature and time on the catalytic performance in the liquid-phase oxidation of p-cresol were optimized. As a result, 10%(mass fraction) PVDF modified cobalt pyrophosphate gave the highest conversion of 94.2% of p-cresol with a selectivity of 94.4% for p-hydroxybenzaldehyde at 348 K and a molar ratio of 4:1 of NaOH/p-cresol and an oxygen pressure of 1.0 MPa for 3 h.

关键词: Hydrophobicity, p-Cresol, p-Hydroxybenzaldehyde, Oxidation, Polyvinylidene fluoride(PVDF)

Abstract:

The influence of the wettability of a catalyst on the performance of the liquid phase oxidation of p-cresol was investigated. It was found that the surface hydrophobicity of a catalyst, which can be changed by modification with various loadings of polyvinylidene fluoride(PVDF), has a promotion effect on the catalytic performance. At the same time, the reaction parameters such as oxygen pressure, molar ratio of NaOH to p-cresol, reaction temperature and time on the catalytic performance in the liquid-phase oxidation of p-cresol were optimized. As a result, 10%(mass fraction) PVDF modified cobalt pyrophosphate gave the highest conversion of 94.2% of p-cresol with a selectivity of 94.4% for p-hydroxybenzaldehyde at 348 K and a molar ratio of 4:1 of NaOH/p-cresol and an oxygen pressure of 1.0 MPa for 3 h.

Key words: Hydrophobicity, p-Cresol, p-Hydroxybenzaldehyde, Oxidation, Polyvinylidene fluoride(PVDF)